Author: Roald A. RindalPublisher:
ISBN:
Category : Noses (Space vehicles)
Languages : en
Pages : 138
Book Description
Test Plan Optimization for Reentry Vehicle Nose Tip Evaluation
Author: Roald A. RindalPublisher:
ISBN:
Category : Noses (Space vehicles)
Languages : en
Pages : 138
Book Description
Test Plan Optimization for Reentry Vehicle Nose Tip Evaluation
Author: Ground Test Facilities for Aerothermodynamic Simulation of Ballistic Reentry Vehicle Nose-tip Conditions
Author: William E Welsh (Jr)Publisher:
ISBN:
Category :
Languages : en
Pages : 40
Book Description
A study was made of ground test simulation of flight conditions of high performance ballistic reentry vehicles, as performed for assessment of ablation performance of nose-tip materials. The study utilized a generalized representation of vehicle materials, configurations, and trajectories. Existing high-temperature steady-flow test facilities were found to be adequate for simulation of peak heating, shear, and pressures corresponding to those for a vehicle reentering the atmosphere at 25,000 ft/sec, at an angle of 30 deg, with a ballistic coefficient of about 800. Improved test facility conditions are required for reentry vehicles of ballistic coefficients higher than 800. The corresponding power, pressure, and enthalpy requirements are shown for arbitrary values of ballistic parameters. Possible advanced facilities for the achievement of higher pressure, enthalpy, and heating rate are compared and briefly discussed. Among these are: a higher-powered heated-flow test facility, a ballistic range test facility, a thermal-radiation augmentation method, and improvements in existing heated-flow facilities. (Author).
Subsurface, Surface, and Boundary Layer Interactions of Various Transpirants with Carbon
Author: Thomas J. DahmPublisher:
ISBN:
Category : Aerothermodynamics
Languages : en
Pages : 126
Book Description
Scientific and Technical Aerospace Reports
Author: Technical Abstract Bulletin
Author: A Collection of Technical Papers
Author: Reentry Vehicle Nosetip Design for Minimum Total Heat Transfer
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 40
Book Description
A direct optimization method has been used to determine fixed fineness ratio nosetip shape contours for a specified vehicle ballistic coefficient; and nosetip scale, which minimize the total trajectory nosetip laminar or turbulent heat transfer. These constraints neglect the interaction of the nosetip shape with vehicle performance characteristics. When this interaction is taken into account and additional new constraints of constant mass and volume are applied, truncated cone nosetips are shown to result in the lowest total nosetip heat transfer. No attempt was made to optimize nosetip shape for the latter constraints.
Passive Nosetip Technology (PANT) Program. Volume XI. Analysis and Review of the ABRES Combustion Test Facility for High Pressure Hyperthermal Reentry Nosetip Systems Tests
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 100
Book Description
The ABRES Combustion Test Facility located at the Air Force Rocket Propulsion Laboratory (AFRPL) is a high pressure liquid rocket combustor which is used for high pressure hyperthermal ablation testing. The oxidizer and fuel (O/F) currently burned in this facility is nitrogen tetroxide and Aerozine-50 at a nominal O/F ratio of 2.1. Calorimeter and pressure calibration data from this facility are compared with predictions. The facility is evaluated from the standpoint of thermo-structural and reentry flight simulation and is compared with other current high pressure ablation test facilities. Alternate propellant combinations are evaluated from the standpoint of upgrading the severity of the ABRES facility hyperthermal test environment. The hydrocarbon/LOX propellant combinations are assessed.
Atmospheric Re-Entry Vehicle Mechanics
Author: Patrick GallaisPublisher: Springer Science & Business Media
ISBN: 3540736476
Category : Technology & Engineering
Languages : en
Pages : 365
Book Description
Based on a long engineering experience, this book offers a comprehensive and state-of-the-art analysis of aerodynamic and flight mechanic entry topics. This updated edition had new chapters on Re-entry on Mars mission, flight quality, rarefied aerodynamics and re-entry accuracy. In addition, it provides a large set of application exercises and solutions.